Five months ago i germinated cactus seeds, then when they were two months old i watered them, then i took a vacation i went back and the little baby cactuses were bigger and had more prickles then i watered them, but they were all black is this normal, did the little fellas get a sunburn or what, the temperature in the greenhouse was about 22 degrees celcius.
Why are all the baby cactuses in my greenhouse turning all black?
I know it sounds crazy but you may be overwatering it. Cacti don't need much moisture at all. Perhaps the air is too humid for them in your green house. If they are in soil you should mix some sand with that soil.
i hope this helps!
Why are all the baby cactuses in my greenhouse turning all black?
cacti never need water, but you can give a little once in a while, that could be it.
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